// 正确示例
let a1: number[] = [1, 2, 3];
let b1: string[] = ["a", "b", "c"];
const getArray2 = (): number[] => {
  return [1, 2, 3];
};

// 错误示例
let x9: Array<number> = [1, 2, 3];
let y9: Array<string> = ["a", "b", "c"];
const getArray = (): Array<number> => {
  return [1, 2, 3];
};
